dnsdist: When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs frontend us...
CVE-2026-24029 is fixed in dnsdist on 1 platform, first by DEBIAN-CVE-2026-24029, released March 31, 2026. It is not reported as exploited. Patch Radar priority: Routine.
When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dnsdist · Debian 13.5 (trixie) | 1.9.14-0+deb13u1 | DEBIAN-CVE-2026-24029 | Mar 31, 2026 |
| dnsdist · Debian 14 | 2.0.3-1 | DEBIAN-CVE-2026-24029 | Mar 31, 2026 |
| dnsdist · opensuse-leap 16.0 | 1.9.13-160000.1.1 | OPENSUSE-SU-2026:21015-1 | Jun 22, 2026 |
| dnsdist · sles 15.7 | 1.9.12-150700.3.9.1 | SUSE-SU-2026:1618-1 | Apr 24, 2026 |
| dnsdist · sles 16.0 | 1.9.13-160000.1.1 | SUSE-SU-2026:22319-1 | Jun 22, 2026 |
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